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backport: re PR tree-optimization/55110 (Internal compiler error in vectorizable_reduction, at tree-vect-loop.c:4633) 

Backported from mainline
	2012-11-27  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/55110
	* tree-vect-loop.c (vectorizable_reduction): Don't assert
	that STMT_VINFO_RELATED_STMT of orig_stmt is stmt.

	* gcc.dg/pr55110.c: New test.

From-SVN: r196140
This commit is contained in:
Jakub Jelinek 2013-02-19 18:15:53 +01:00 committed by Jakub Jelinek
parent 72709b5e53
commit fdd493a46c
4 changed files with 30 additions and 1 deletions
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9
gcc/ChangeLog
View File

@ -1,3 +1,12 @@
2013-02-19 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2012-11-27 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/55110
* tree-vect-loop.c (vectorizable_reduction): Don't assert
that STMT_VINFO_RELATED_STMT of orig_stmt is stmt.
2013-02-18 Richard Biener <rguenther@suse.de>
Revert

8
gcc/testsuite/ChangeLog
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@ -1,3 +1,11 @@
2013-02-19 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2012-11-27 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/55110
* gcc.dg/pr55110.c: New test.
2013-02-18 Richard Biener <rguenther@suse.de>
Revert

13
gcc/testsuite/gcc.dg/pr55110.c Normal file
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@ -0,0 +1,13 @@
/* PR tree-optimization/55110 */
/* { dg-do compile } */
/* { dg-options "-O1 -ftree-vectorize" } */
int
foo (int x)
{
int a, b;
for (b = 0; b < 8; b++)
for (a = 0; a < 2; a++)
x /= 3;
return x;
}

1
gcc/tree-vect-loop.c
View File

@ -4453,7 +4453,6 @@ vectorizable_reduction (gimple stmt, gimple_stmt_iterator *gsi,
if (orig_stmt)
{
orig_stmt_info = vinfo_for_stmt (orig_stmt);
gcc_assert (STMT_VINFO_RELATED_STMT (orig_stmt_info) == stmt);
gcc_assert (STMT_VINFO_IN_PATTERN_P (orig_stmt_info));
gcc_assert (!STMT_VINFO_IN_PATTERN_P (stmt_info));
}